Steel 55ХФА (55ХФ)

Designation

Name	The value
Designation GOST Cyrillic	55ХФА
Designation GOST Latin	55XFA
Transliteration	55HFA
By chemical elements	55CrV

Name	The value
Designation GOST Cyrillic	55ХФ
Designation GOST Latin	55XF
Transliteration	55HF
By chemical elements	55CrV

Description

55ХФА steel is used: for the manufacture of heavy-duty parts with high fatigue strength; springs operating at temperatures to +200 °C; the tool.

Note

Steel spring, chrome vanadium high quality instrumental belongs to the group of presintering steels.

Standards

Name	Code	Standards
Blanks. Of the workpiece. Slabs	В31	TU 14-1-1842-76

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	V
TU 14-1-1842-76	0.5-0.6	≤0.025	≤0.025	0.5-0.8	0.8-1.1	0.17-0.37	≤0.3	Rest	0.1-0.2

Fe is the basis.
According to TU 14-1-1842-76, the chemical composition is given for 55ХФА steel. The permissible deviations in chemical composition are in accordance with GOST 14959.

Technological properties

Name	The value
Macrostructure and pollution	The macrostructure of the square billets on the other 14-1-1842-76 in fractures treated or templete should not have shrinkage, porosity, bubbles, delaminations, cracks, inclusions and placenow.
Particularities of production of goods	Billets, on the other 14-1-1842-76 supplied in the annealed condition.